Question

3.
In Figure-1, from an external point P, two tangents PQ and
drawn to a circle of radius 4 cm with centre 0. If 2 QPR = 9
length of PQ is
(A) 3 cm
(B) 4 cm
(C) 2 cm
(D) 2/2 cm
4 cm​

Answer 1

Answer:

Are sunny ko Jake puch vo Bata degi answer क्या hai

Step-by-step explanation:

Answer is 5cm

Answer 2

Answer:

Step-by-step explanation:

If two circles touch each other externally, then distance between their centres is equal to the sum of their radii.

∴ AB = AE + EB = 4 cm + 6 cm = 10 cm

It is given that l is a common tangent which touches the circles at C and D.  

∴ ∠ACD = ∠BDC = 90º     (Tangent at any point of a circle is perpendicular to the radius throught the point of contact)

Draw AF ⊥ BD.